Methyl 5-(difluoromethyl)-3-nitro-4-(trifluoromethyl)pyridine-2-acetate
3-(Difluoromethyl)-2-nitro-6-(trifluoromethyl)pyridine-5-acetic acid
3-(Difluoromethyl)-2-nitro-5-(trifluoromethyl)pyridine-6-acetic acid
Methyl 5-(difluoromethyl)-4-nitro-2-(trifluoromethyl)pyridine-3-acetate